Crowd System - Mystery of the Disappearing Delegates

[schroederC3D]

Hi Everyone,

I've got a crowd system set up with 300 delegates. The following behaviors are assosciated with the delegates:

Avoid
Seek
Surface Follow
Wander

These delegates are supposed to wander around the surface for 500 frames, avoiding eachother, and heading towards a box at the opposite end of the surface.

The Problem:

Then I begin to solve the crowd simulation with the 4 behaviors, the delegates appear to die, or, disappear. It seems to happen randomly, but eventually near the end of the simulation time, there's only a few left. What I've noticed is that if I turn off the Avoid Collisions behavior, the delegates do just fine. Which is great except I can't have bipeds passing through eachother.

Checking the curve editor for one of the delegates, I see that it's suddenly moved very far away out of the scene. So what is happening here is that the delegates are suddenly jumping through space and time. Why?

Thanks,
Andrew